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The Bad Seed

Researchers are racing to identify tumor-forming stem cells in skin, lung, pancreatic, and many other cancers.

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Your article describes how the male bean weevil’s spiked reproductive part damages the female’s reproductive tract to reduce the chance that she will mate with other males. Could this also explain the barbs on the organ of the domesticated tom cat? I have read that the pain of copulation induces the female’s ovulation, but I […]

19391

The article about tuberculosis states that Robert Koch in 1882 was the first person to link a particular microbe to a disease. References indicate that Armauer Hansen demonstrated in 1868 that Mycobacterium leprae was associated with the tissues of leprosy patients.